The ability to allow Flash to be be upgraded while SeaMonkey is running,
introduced in Beta 4, has been disabled due to regressions (bug 758363).

Fixes in Beta 4

&dArr; character entity and similar symbols caused excessive
line-spacing under GDI (avoid using Cambria Math for symbol fallback) (bug 739804).

Allow Flash to be be upgraded while SeaMonkey is running, part 2
(allow plugins that we previously considered duplicates to be
loaded/registered. Prefer plugins with higher version numbers when
picking a handler for content) (bug 686335).

Allow Flash to be be upgraded while SeaMonkey is running, part 1
(implemented NPN_ReloadPlugins for out-of-process plugins) (bug 758363).

Fixes in Beta 3

Nothing special.

Fixes in Beta 2

Messages could be lost when downloaded using POP3 and the inbox was corrupted (bug 754301).

Saving a local message as .txt or .html on Windows failed (bug 763319).